Mimétisme ou contre-programmation ?. Un modèle de concurrence entre programmes pour la télévision en clair

Two television channels compete on programming with respect to both program profile and program quality. At the equilibrium, program diversity and program quality depend on the characteristics of quality competition. We elaborate a model of differentiation to study this phenomenon. We determine under which conditions the channels prefer a "mimic strategy" (minimum differentiation) or a "counter-programming strategy" (maximum differentiation). The results are applied to analyse what kind of regulatory decisions might enhance program diversity.